Yokogawa ER Bus Interface Master Module | EB401-50

Product Overview

The Yokogawa EB401-50 functions as the primary communication anchor for the ER Bus network within integrated control architectures. As an ER Bus Interface Master Module, it orchestrates data exchange between local controllers and remote nodes, ensuring synchronized command execution across the plant floor. This module manages the arbitration of the 10 Mbps physical layer, providing the backbone for robust, distributed I/O management. We supply this unit as 100% Brand New and factory-sealed, ensuring full compliance with original manufacturer specifications.

Part Number Breakdown

Yokogawa EB series modules utilize specific suffix codes to define hardware revisions and mounting compatibility:

Technical Specifications

The EB401-50 utilizes a specialized physical layer to maintain high-speed data throughput in electrically noisy environments.

• Manufacturer: Yokogawa

• Model: EB401-50

• Physical Layer: IEEE 802.3 10BASE-2 (Coaxial)

• Port Configuration: 1 x BNC Connector

• Communication Speed: 10 Mbps

• Max Transmission Distance: 185 meters per segment (with YCB141 cable)

• Current Consumption: 0.7 A

• Weight: 0.3 kg

• Condition: 100% Brand New and Original

Engineering Advantages

The EB401-50 optimizes distributed control layouts by addressing specific networking constraints:

• Long-Distance Remote I/O Control: By utilizing the 10BASE-2 physical layer, this module extends control reach up to 185 meters without requiring additional repeaters. This reduces the total cost of ownership for sprawling industrial facilities.

• Deterministic Communication: The master-logic firmware prioritizes critical control packets over the ER Bus. This ensures that safety-critical data reaches the controller within defined time windows, preventing process jitter.

• Robust Coaxial Shielding: The BNC-terminated coaxial interface provides superior immunity to electromagnetic interference (EMI) compared to standard twisted-pair cabling. This makes the EB401-50 ideal for environments with heavy motor activity or high-voltage switching.

• Low Heat Dissipation: Drawing only 0.7 A, the module minimizes the thermal load within the cabinet. This allows for tighter hardware packing and extends the lifespan of adjacent electronic components.

FAQs

What specific cable type must I use with the EB401-50?

To achieve the maximum rated distance of 185 meters and maintain signal integrity, use the Yokogawa YCB141 coaxial cable. Using non-specified cables may increase signal attenuation and cause communication time-outs.

Does this module require a terminator?

Yes. Since the EB401-50 utilizes 10BASE-2 architecture, you must install a 50-ohm BNC terminator at both ends of the ER Bus segment to prevent signal reflection and data corruption.

Can the EB401-50 coexist with newer Ethernet-based modules?

The EB401-50 operates specifically on the ER Bus protocol. While the control station manages both, this module requires a dedicated coaxial network separate from your Vnet/IP or standard Ethernet plant networks.